Beautiful Barn Owl back again

Proving increasingly reliable, this bird appeared again right on cue in the usual spot and posed nicely for the camera. Sadly, I also discovered in the field the remains of what I presume was its mate - feathered primaries, a breastbone and fully clawed legs. I've no idea what caused its recent death, although the scattered remains suggested that it may have been taken by another bird of prey (is this possible?) or at least predated on post mortem, perhaps by a fox and probably following the recent snow and sub-zero temperatures.